Historical clue formulations

• Deep and sonorous, as a voice — 2016-09-13
• Like a good speaking voice — 2010-06-09
• Rich-voiced — 2005-04-19
• Rich, as a voice — 2004-05-04
• Full and strong — 2000-10-12
• Strong and clear, as a voice — 1999-12-04
• Full-bodied — 1996-07-19